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d in (-oo:+oo)
-7/15 = d-(2/3) // - d-(2/3)
2/3-d-7/15 = 0
1/5-d = 0 // - 1/5
-d = -1/5 // * -1
d = 1/5
d = 1/5
| -16/5=w+4/5 | | 97/10=b-3/10 | | x/5=-1/5 | | a+7=73/11 | | b+1=7 | | -1/3+n=4/15 | | b+10=11 | | -4/7+b=-11/7 | | w+1=0 | | k/4=-2/7 | | t-7=-7 | | 14=k+4 | | m+8/9=92/63 | | d+7=85/11 | | a-1/2=-11/8 | | d+2/5=19/60 | | 6/35=d+4/7 | | w-5/8=13/56 | | m+9=87/10 | | a+4=7/2 | | 9=w+10 | | 65/7=w+9 | | -6b=-42 | | d+1/9=-71/9 | | 3n=-3/5 | | t/2=-2 | | m+1=9/5 | | x+3=13/4 | | 6+w=9 | | -4/5=m-4/5 | | d+4=9 | | 2/7t=8/77 |